Attachment for gas burners



Jan. 8, 1935. w. HURLBURT ATTACHMENT FOR GAS BURNERS I l 5 l,

Filed Aug. 16, 1 952 -/2 1 ulllll/ III/I11 Patented Jan. 8, 1935 3 g UNITED STATES PATENT OFFICE.

ATTACHMENT FOR GAS BURNERS Watson Hurlburt, River Forest, Ill.

Application August 16, 1932, Serial No. 629,013' 4Claims. (c1. 152L116 The invention relates to the correction of the to put on and take off my attachment as easily wasteful features of gas burners as generally made as placing. a cover ,on a teapot. today, and more particularly those on the common The principal objects of my invention are:' kitchen range, but wherever the construction is lst.--That it shall correct some of the inherent such that a similar design-can be used it may be defects of the present gas burners. I

applied to a useful purpose on those burners. 2nd.To provide an attachment. easily. and When gas is burned in the open it is evident quickly removed and replaced. that the flame is subject to too much secondary 3rd.That it may be economically manufacair, that is; to say, the air that contacts with the tured.

w flame at the point of combustion; this does not -Also other objects and advantages will be apmeanthat a properly mixed product has not been parent as I proceed with the description. produced, for this should be attended to before The preferred construction as outlined in my applying my attachment. invention I have illustrated in the accompanying It is common knowledge that fuel can be more drawing. Like .figures refer to similar parts 5; economically burned in a. stove. than in an open throughout the different illustrations. fireplace. Now an ordinary gas burner is used As. various deviations from. that illustrated entirely open, the same as an open fireplace. By would not depart from the spirit of my invenproperly enclosing the flame, while at the same tion, I do not wish to be limited to the exact detime admitting only the necessary secondary air tails of construction herewith shown.

go to properly promote combustion, and a desirable Fig. 1 illustrates one of my burner attachments circulation, I am enabled to get a more efficient shown in plan view, dotted linesindicating the result from the amount of gas used. The encloburner itself to which the attachment is applied. sure also prevents undue blowing by air currents Fig. 2 is a section on line 2-2 of Fig. l, a part caused by opening of doors and the like. of the burner itself being in section. 23 I have constructed an attachment preferably Fig. 3 is a section on line 3-3 of Fig. 1. 25 of sheet metal and generally circular in form, Fig. 4 is a partial plan view of my attachment parts of which conform to the general contour of adapted to a different pattern of burner than that the burner and so positioned that certain parts of Fig. 1. straddle the flame, said attachment being sup- Fig. 5 is an enlarged section taken on line 5-5 ported on top of the burner but in no way interof Fig. 4. 30 fering with the egress of the gas. The peripheral Fig. 6 is an enlarged section taken on line 6-6 ring that encloses the sides may assume a verof Fig. 4. tical or a sloping position immediately below the In the customary procedure I adjust the mixgrate and on top of the burner itself, and may be ture of gas and air, if such is not already in the perforated to allow entrance of the flame of a proper proportions. I now select an attachment 35 lighterwe may liken this to the sides of a shalwherein the openings in the horizontal members low cup the bottom of which may have portion correspond in outline to the space. between the projecting inwardly and lying between the arms burner arms, and, where depending lugs are reof the burner, and act as bafile plates to too much q d to Center and Sustain Sa d attachment, it

ingress of secondary air. These portions may be S dr pp in p Should the lugs t o fo m 40 perforated i variety of w or they may b nicely to the width of the burner arms, a slight spaced away from the openings where the gas bend, in 011%, y be given them with a pair of escapes from the arms of the burner, whereby P in either case the proper amount of secondary air Many times after a very good adjustment of the is admitted to carry on combustion and keep up mixture has been found all right, if an open 45 circulation. flame is used, when upon seating one of my at- Some burners have an almost smooth top, and tachments in place the gas supply may be out anything placed thereon has no means of centerdown without detriment to the working qualities ing itself or retaining a proper position thereon of the burner. It is quite reasonable to expect relative to the openings for the gas. To overby using my attachments a saving in gas of from 50 come this condition I have formed lugs at the 15% to 30%. I sides of the inwardly projecting portions which Referring to the drawing, 1 indicates my atmay be bent downwardly impinging on the body tachment. 2, a horizontal member projecting of the arms of the burner. By locating these lugs inwardly and lying intermediate of the burner 5 at definite distances apart circularly,Iam enabled arms 3, shown in dotted lines. 4 shows the 5 horizontal member as spaced away from the burner to allow admittance of a certain percentage of secondary air to the enclosed compartment 5. Lugs, 6, depend from the horizontal member 2, causing the opening '1 between the horizontal members 2, to straddle the jets 8 in the burner arms 3. The outside boundary of my attachment is at 9, being drawn from the same piece of metal and forming the enclosure at the sides of compartment 5. A ventilator 10, in Fig. 4 with sides 11 may be bent forward or backward, as more or less of an opening may be required to admit secondary air. Other ventilator openings as at 12, may be of a circular form having inclined edges, 13, capable of varying the size of the orifice by a more or less inclination of the enclosing walls. An opening in the member 9 may be provided for the passage of a lighter flame to contact with the issuance of gas from the jets 8, as at 14.

What I claim:

1. In the combination, a gas burner and an attachment designed to conserve the heat from a gas flame, said attachment having the general shape of a shallow cup forming a combustion chamber, perforations in the bottom of which allow portions of said burner to project therethrough; also perforations in said bottom to measme the influx of the secondary air to the combustion chamber.

2. In the combination, a gas burner and an attachment designed to conserve the heat from a gas flame, said attachment having the general shape of a shallow cup forming a combustion chamber, perforations in the bottom of which allow portions of said burner to project therethrough; also perforations in said bottom to measure the influx of the secondary air to the combustion chamber, the side of said attachment having openings to allow the flame of a lighter to contact the gas exuding from the burner.

3. In the combination, a gas burner made up of a plurality of jets set ofi in definite groups, and an attachment having the general shape of a shallow cup forming a combustion chamber, perforations in the bottom of which allow portions of said burner to project therethrough; also perforations in said bottom to measure the influx of the secondary air to the combustion chamber, the side of said attachment having openings to allow the flame of a lighter to contact the gas from the inner ends of opposing members, said horizontal members being in spaced relation to each other and the opposing members acting as baffle plates.

4; In the combination, a gas burner made up of a plurality of jets, set off in definite groups, and an attachment having the general shape of a shallow cup forming a combustion chamber, perforations in the bottom of which allow portions of said burner to project therethrough; also perforations in said bottom to measure the influx of the secondary air to the combustion chamber, the side of said attachment'havin'g openings to allow the flame of a lighter to contact the gas exuding from the burner; the side of said attachment having horizontal members extending toward the center of the combustion space and lying between certain groups of jets, the inner ends of said horizontal members spaced away from the inner ends of opposing members, said horizontal members being in spaced relation to each other and the opposing members, acting as bafile plates; said horizontal members equipped with downwardly extending lugs designed to impinge against the sides of said burner to keep said attachment in proper location on said burner.

WATSON HURLBURT. 

